Acceleration The rate of change of velocity with respect to time. Velocity The rate of change of displacement with respect to time Displacement The distance travelled by an object in a particular direction Speed Distance travel by an object without a given direction Newton One newton is the force that will give a mass of 1kg an acceleration of 1ms-2 in the direction of the force Weight Mass X velocity Newton's first law An object will remain at rest or in a state of uniform motion unless it's acted on by an external force Newton's second law F=ma The net force acting on object is directly proportional to the momentum of that object Mass Is a measure of an objects inertia (mass of an object increases as it approaches the speed of light) Vector Is a quantity that has direction and magnitude Moment of a force Force X perpendicular distance of the pivot from the line of action of the force Principal of moment For any object that is in equilibrium the sum of the clockwise moment about any point provided by the force acting on the object is equal to sum of the anticlockwise moment about the same point. Torque of a couple One of the forces X perpendicular distance between the forces For an object in equilibrium two (1) The resultant force on the object is conditions must be met at the zero same time (2) The resultant torque must be zero Density = Mass/ volume Pressure P=normal force/Cross sectional area

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Thinking distance Distance travelled by the car in the same time the driver reacts to a particular situationBraking distance The distance travelled by the car as the brakes are applied and the car comes to a stopStopping distance Thinking distance + braking distanceWork done W = F x X= displacement in the direction of force Or W=Fxcos angleA joule The work done or the energy transferred when a force of one newton moves distance of one meter in the direction of…read more